In a small coastal town in Oregon, a group of young friends discovers an old treasure map in the attic of one of their homes. With their neighborhood threatened by demolition to make way for an expanding country club, this motley crew of "Goonies" sees the map as their chance to find the long-lost fortune of the infamous 17th-century pirate, One-Eyed Willy. The treasure, they believe, could save their homes and their way of life. Eager for one last adventure together before their world changes forever, they set out to find the hidden riches.

Their quest quickly becomes a perilous journey, leading them into a series of ancient tunnels and booby-trapped caves beneath their town. Along the way, the Goonies must decode riddles and navigate obstacles, all while outrunning a family of criminals who are also after the treasure. Despite their differences and the challenges they face, the friends learn the value of teamwork and friendship. Through bravery and ingenuity, they inch closer to their goal, unaware of the dangers that lie ahead in the dark, twisting underground.